Verified answer

a

1 concentrate

2 arrive

3 asked

4 borrowed

5 spent

6 deal

b

1 relaxed

2 shocking

3 tiring

4 amazing

5 annoying

6 embarrassed

c (примерные предложения)

1) I usually feel relaxed during my school holidays.  Studying at school is tiring.

2) The news about the coronavirus pandemic is really shocking.It is annoying to know how easily and fast it spreads from person to person.

3) Yesterday I was going on the bus when I sneezed. All the people around looked at me and I felt awfully embarrassed.